A measurement of the energy and timing resolution of GlueX Forward Calorimeter using an electron beam

Journal Article · Tue Oct 01 00:00:00 EDT 2013 · Nucl.Instr.Meth.A

DOI:https://doi.org/10.1016/j.nima.2013.05.109· OSTI ID:1084336

Moriya, Kei ^[1]; Leckey, John P. ^[1]; Shepherd, Matthew R. ^[2]; Bauer, Kevin ^[1]; Bennett, Daniel William ^[1]; Frye, John Michael ^[1]; Gonzalez, Juan Carlos ^[3]; Henderson, Scott J. ^[1]; Lawrence, David W. ^[4]; Mitchell, Ryan E. ^[1]; Smith, Elton S. ^[4]; Smith, Paul T. ^[1]; Somov, Alexander Sergeyevich ^[4]; Egiyan, Hovanes ^[4]

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1. Indiana U.
2. Cornell U.
3. Christopher Newport U., JLAB
4. JLAB

The performance of the GlueX Forward Calorimeter was studied using a small version of the detector and a variable energy electron beam derived from the Hall B tagger at Jefferson Lab. For electron energies from 110 MeV to 260 MeV, which are near the lower-limits of the design sensitivity, the fractional energy resolution was measured to range from 20% to 14%, which meets the design goals. The use of custom 250 MHz flash ADCs for readout allowed precise measurements of signal arrival times. The detector achieved timing resolutions of 0.38 ns for a single 100 mV pulse, which will allow timing discrimination of photon beam bunches and out-of-time background during the operation of the GlueX detector.

• Research Organization: Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
• Sponsoring Organization: USDOE Office of Science (SC)
• DOE Contract Number: AC05-06OR23177
• OSTI ID: 1084336
• Report Number(s): JLAB-PHY-13-1729; DOE/OR/23177-2556; arXiv:1304.4999
• Journal Information: Nucl.Instr.Meth.A, Vol. 726
• Country of Publication: United States
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
GlueX
Jefferson Lab
Calorimetry
Lead glass
Flash ADC